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Silica Low & High Range

You are here : Home | Spares & Parts | Water Testing Equipment Water Testing Instruments | Single Parameter Checkers | Silica Low & High Range


Single Parameter Check – Silica Low & High Range

Single Parameter Check - Silica Low & High RangeSilica High Range and Low Range  Handheld Colorimeter

  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for: Aquaculture, water quality
  • Environmental, water treatment

Silica is the name given to silicon dioxide, SiO2. Silicon (Si), is the most abundant element in the Earth’s crust, 28% of it by weight. Silicon is never found free form in nature. In crystallised form it is only reactive under conditions of extremely high temperatures. Water and water vapor have little influence upon silicon solubility, because a protective surface layer of silicon dioxide is rapidly formed. Silicon binds with other elements to form various species of silica and silicate. The concentration of the soluble silica molecules are important to aquaculture because they influence (and limit) the growth of diatoms.

In most waters, the predominant form of dissolved silica is monosilicic acid, which incorporates two water molecules.

The HI705 and HI770 Checker®HC Handheld Colorimeters are a simple, accurate, and cost effective way to measure silica. Each model is designed for a specific range (low or high) in order to provide high levels of accuracy.

The contoured style of these Checkers®HC fit easily in the palm of your hand or pocket and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.

CodeRangeDescriptionPrice
S43-HI770(HR)0 to 200 ppmSupplied with sample cuvettes with caps (2), silica HR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.£60.00Buy Now
S43-HI705(LR)0 .00 to 2.00 ppmSupplied with sample cuvettes with caps (2), silica LR reagent starter kit (reagents for 12 tests), battery, instructions and quick start guide.£60.00Buy Now

Replacement Reagents

Replacement Reagents

CodeDescriptionPrice
HI-705-25Reagents for Silica LR & HR Pocket Checker£29.20Buy Now

Specifications
HI770 (HR)HI705 (LR)
Range0 to 200 ppm0 .00 to 2.00 ppm
Resolution1 ppm0.1 ppm
Accuracy @ 25°C/77°F±2 ppm ±5% of reading±0.03 ppm ±5% of reading
Light SourceLED @ 470 nmLED @ 610 nm
Light Detectorsilicon photocell
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type(1) 1.5V AAA
Auto-offafter ten minutes of non-use
Dimensions81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight64 g (2.25 oz.
Methodadaptation of the USEPA method 370.1
for drinking, surface and saline waters
and Standard Method 4500-SiO₂ C for
domestic and industrial waters
adaptation of the ASTM D859,
heteropoly blue method

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